Горбійчук, М. І., Г. Н. Семенцов, and Н. В. Сабат. 2011. “IDENTIFICATION OF COORDINATE PETURBATIONS IN AUTOMATED CONTROL SYSTEMS OF OIL AND GAS WELLS DEEPENING PROCESS”. Oil and Gas Power Engineering, no. 1(14) (May):57-64. https://nge.nung.edu.ua/index.php/nge/article/view/165.